Ballpoint pen



FIG. 1 is a Perspective View of a ballpoint pen showing my new design;

FIG. 2 is a Front Elevation View thereof;

FIG. 3 is a Rear Elevation View thereof;

FIG. 4 is a Left Side View thereof;

FIG. 5 is a Right Side View thereof;

FIG. 6 is a Top Plan View thereof;

FIG. 7 is a Bottom Plan View thereof;

FIG. 8 is a Cross-Sectional View taken along the line 8—8 in FIG. 6;

FIG. 9 is an enlarged cross-sectional view taken along the line 9—9 in FIG. 2;

FIG. 10 is an enlarged cross-sectional view taken along the line 10—10 in FIG. 2;

FIG. 11 is a front elevation view thereof, lined for transparency, the clip also being transparent;

FIG. 12 is another right side view thereof, lined for transparency;

FIG. 13 is a front elevation view thereof, shown in a state of use; and,

FIG. 14 is an enlarged cross-sectional view thereof, taken along the line 14—14 in FIG. 13, shown in a state of use. 

The ornamental design for a ballpoint pen, as shown and described. 